Earnings per Share and Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share Basic [Line Items]
Income per common share - basic	$ 0.61	$ 0.56	$ 1.75	$ 1.04
Income per common share - diluted	$ 0.61	$ 0.56	$ 1.74	$ 1.04
Weighted Average Limited Partnership Units Outstanding, Basic	741,433	762,793	755,393	763,907
Continuing Operations [Member] | Parent Company [Member]
Earnings Per Share Basic [Line Items]
Income attributable to common stockholders/unit holders - basic	$ 104,796	$ 95,490	$ 300,024	$ 176,146
Income attributable to common stockholders/unit holders - diluted	$ 104,796	$ 95,490	$ 300,024	$ 176,146
Weighted average common shares/units outstanding for basic EPS/EPU	172,064,000	169,854,000	171,692,000	169,812,000
Weighted average common shares/units outstanding for diluted EPS/EPU	172,424,000	170,172,000	172,036,000	170,065,000
Income per common share - basic	$ 0.61	$ 0.56	$ 1.75	$ 1.04
Income per common share - diluted	$ 0.61	$ 0.56	$ 1.74	$ 1.04
Continuing Operations [Member] | Partnership Interest [Member]
Earnings Per Share Basic [Line Items]
Income attributable to common stockholders/unit holders - basic	$ 105,248	$ 95,922	$ 301,339	$ 176,942
Income attributable to common stockholders/unit holders - diluted	$ 105,248	$ 95,922	$ 301,339	$ 176,942
Weighted average common shares/units outstanding for basic EPS/EPU	172,805,000	170,617,000	172,448,000	170,576,000
Weighted average common shares/units outstanding for diluted EPS/EPU	173,165,000	170,935,000	172,791,000	170,828,000
Income per common share - basic	$ 0.61	$ 0.56	$ 1.75	$ 1.04
Income per common share - diluted	$ 0.61	$ 0.56	$ 1.74	$ 1.04